Bakery proof box



W. L. FLEISHER BAKERY PROOF BOX Filed Aug. 4, 1925 mzpfi.

- 11v VENTORK W. L FLEISHER.

TORNEY Patented Dec. 22, 1925.

UNITED STATES PATENT OFFICE.

WALTER I. FLEISHER, OF NEW YORK, N. Y.

BAKERY PROOF BOX.

Application filed August 4, 1925. Serial No. 48,176.

built in units with air inlets and outlets so arranged that the box can be set up, enlarged or reduced without any changes except as to its size.

Theobject of the invention is to provide a bakery proof. box built of units so that all parts are interchangeable, and with the air inlets and outlets arranged for the best method of proofing.

In the appended drawing, Figure 1 is a top plan view of two units combined to form a proof box. The dotted outline in said figure shows an added third section. Figure 2 is a fragmentary section on line 2/2, Figure 1. Figure 3 is a vertical section on line 3/3, Figure 1, and Figure 4 is an enlarged modified structure of the air duct in the proof box unit.

Referring to the drawings, 55 are sections or units of which the proof box is formed. Each of the units comprises a vertical air duct portion GVmerging into hori zontal duct portions 7. The air duct is preferably framed by channeled shape 8. See Figures 1 and 4. The ducts in each unit are located on the opposite walls of the facing units forming the proof box. The walls of the unit are preferably formed of double walled panels 9, the inside facing or sheeting of which is preferably of noncorrosive material.

The roof is also formed of double panels 10, but the inner facing is of the same metal as the outer facing, for a hanging ceiling 11 of non-corrosive material is provided in each unit, the space between the panels 10 and the ceiling 11 forming a plenary chamber 12 which is in communication with the interior of the unit by adjustable dampers 13 provided in'the ceillng. I

In the structure shown in Figures 1, 2 and 3, the panels 9 at the channeled shape 8 form the rear wall of the air ducts, the front walls of the unit being formed by plates 14 located in the vertical part of the duct 6 and plate 15 covering the horizontal duct portions 7,. The pla s 15 are pro vided with suitable apertures 16 through whlch air is distributed to the box formed of the units 5.

In the modified structure of Figure 4, the

or the rectangular unit 17 if the structure of the duct is such as shown in Figure 4. The'panels can then be used on the new added unit as well as the plates 14 and 15 or the rectangular duct 17. In consequence, the outer side wall of the new unit is closed by the panels of the preceding unit and the air duct thereof is formed by the plates or rectangular duct 17 of the same preceding unit. The preceding unit adjacent thereto will have its original outer wall merely outlined by the structural shapes used for its construction in addition to the channeled shapes 8 which originally framed the air duct.

In view of the fact that the channeled shapes 8 are open where originally the air duct was formed, very little resistance will be offered to the flow of the air from the new air duct provided in the outer side wall of the added unit. The new added unit has its own plenary chamber which will form an extension of the plenary chamber of the other units to which the new unit is connected.

In some cases the openings 16 of the air duct may have to be changed where the number of units added is large and. the volume of the box is increased considerably.

Each section is provided with doors 18 through which the trucks are moved and in cases where sections are added to the sides where the doors are provided, it is only necessary to remove the doors and panels of the said sides, add the units and place the doors and panels removed on the new units. The new added units will have the horizontal portions of the air ducts either merged w th the horizontal portions of the adjacent unlts or independent thereof.

From the above description it will be seen that in my construction of the proof box of standardized unit or sections, a proof box can be built of a definite size and then increased or decreased by a definite unit or units, as the case may be.

I claim:

1. In aprooii box formed of units or sec tions, each having a plenary chamber at the top thereof, channelled shapes disposed along a vertical wall for framing an air duct and means interposed between the section and the plenary chamber for controlling the communication tllGTGbGt-W'GGH.

2. In a proof box formed of units or sections, each having a plenary chamber at the top thereof, a removable air duct disposed along a vertical wall of the section, means for supporting the duct forming part of the wall structure, and means interposed between the plenary chamber and thersection below the plenary chamber for controlling the fioW of air therebetween.

3. In a proof box formed of units or sections, ea'h unit having a removable air duct presenting a vertical portion on the side Wall and a horizontal portion on the same Wall near the bottom of the chamber,

said vertical and horizontal duct sections be ing framed by channelled shapes forming part of the said side Wall.

4:. In a proof box formed of units or sections, each unit having channeled shapes running along the side Wall in substantially vertical and horizontal directions, and means for engaging the said shapes to form an air duct for the unit.

5. In a proof box formed of units or sections, each having a hanging ceiling spaced from the top of the unit to form a plenary chamber in the unit, channeled shapes running along a side Wall of a unit in substantially vertical and horizontal directions, the vertical parts of such shapes passing through the plenary chamber, while the horizontal parts are located substantially at the bottom of the unit, means co-operating With said channeled shapes to form an air duct for the unit, and means associated with the hanging ceiling for controlling the air flow from the duct to the plenary chamber.

WALTER L. FLEISHER 

